diff --git a/packages/types/src/interfaces/state/definitions.ts b/packages/types/src/interfaces/state/definitions.ts
index 6861fec25591..8ef90094527e 100644
--- a/packages/types/src/interfaces/state/definitions.ts
+++ b/packages/types/src/interfaces/state/definitions.ts
@@ -334,7 +334,8 @@ export default {
       authoringVersion: 'u32',
       specVersion: 'u32',
       implVersion: 'u32',
-      apis: 'Vec<RuntimeVersionApi>'
+      apis: 'Vec<RuntimeVersionApi>',
+      transactionVersion: 'u32'
     },
     StorageChangeSet: {
       block: 'Hash',
diff --git a/packages/types/src/interfaces/state/types.ts b/packages/types/src/interfaces/state/types.ts
index a799c7efe608..569dd43ec3dc 100644
--- a/packages/types/src/interfaces/state/types.ts
+++ b/packages/types/src/interfaces/state/types.ts
@@ -20,6 +20,7 @@ export interface RuntimeVersion extends Struct {
   readonly specVersion: u32;
   readonly implVersion: u32;
   readonly apis: Vec<RuntimeVersionApi>;
+  readonly transactionVersion: u32;
 }
 
 /** @name RuntimeVersionApi */